51834-89-0Relevant articles and documents
Multicyclic polyethers derived from 1,4-dicyanotetrafluorobenzene and flexible diphenols
Kricheldorf, Hans R.,Schellenberg, Johann,Schwarz, Gert
, p. 6445 - 6450 (2007/10/03)
1,4-Dicyanotetrafluorobenzene (DCTB) was polycondensed with various diphenols in DMF or DMSO using K2CO3 as catalyst and HF acceptor. At concentrations of 0.1 or 0.2 mol/L for DCTB, gels were obtained with 1,4-bis[2-(4-hydroxyphenyl)